# l1 = [1, 1, 2, 2, 3, 3, 4, 4]


# l1 = ['a', 'b', 'c']
# l2 = ['1', '2', '3']
# l3 = [1, 2, 3]
# for i in zip(l1, l2):
#     print(i)
# print(list(zip(l1, l2, l3)))
